Destabilization of an oceanic meddy-like vortex: Energy transfers and significance of numerical settings

C Ménesguen, S Le Gentil… - Journal of Physical …, 2018 - journals.ametsoc.org
The increase of computational capabilities led recent studies to implement very high-
resolution simulations that gave access to new scale interaction processes, particularly …

Numerical simulations of the shear instability and subsequent degeneration of basin scale internal standing waves

A Grace, M Stastna, FJ Poulin - Physical Review Fluids, 2019 - APS
We present high-resolution simulations of the instability and subsequent breakdown of
standing waves, or seiches, in a fluid continuously stratified in the vertical direction. It is well …

Diffusive effects in local instabilities of a baroclinic axisymmetric vortex

S Singh, M Mathur - Journal of Fluid Mechanics, 2021 - cambridge.org
We present a local stability analysis of an idealized model of the stratified vortices that
appear in geophysical settings. The base flow comprises an axisymmetric vortex with …

Energy-conserving Galerkin approximations for quasigeostrophic dynamics

M Watwood, I Grooms, KA Julien, KS Smith - Journal of Computational …, 2019 - Elsevier
A method is presented for constructing energy-conserving Galerkin approximations in the
vertical coordinate of the full quasigeostrophic model with active surface buoyancy. The …

Instabilities and layering of a heated laboratory anticyclone

MJ Burin, J Sommeria, S Viboud - Physical Review Fluids, 2020 - APS
We generate and observe large (∼ 1 m diameter) anticyclonic vortices in a stably stratified
rotating tank that are neutrally buoyant. A nonaxisymmetric (m= 2) instability quickly …

The merger of two three-dimensional quasi-geostrophic baroclinic tripolar eddies

JN Reinaud, X Carton - Geophysical & Astrophysical Fluid …, 2021 - Taylor & Francis
We investigate the strong interaction between two baroclinic tripolar eddies in a three-
dimensional, rapidly-rotating, continuously stratified flow under the quasi-geostrophic …

Direct Numerical Simulations of the Degeneration and Shear Instability of Large and Small Amplitude Basin Scale Internal Waves at Varied Aspect Ratios

A Grace - 2018 - uwspace.uwaterloo.ca
This thesis presents high resolution simulations of the degeneration and shear instability of
standing waves, or seiches, of varying amplitudes and aspect ratios in a continuously …